Steam ID Converter

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convert steamid64 to steamid2

Convert SteamID64 to SteamID2 (STEAM_0:Y:Z)

Paste the SteamID64 into the converter field and it returns both SteamID2 spellings, STEAM_0 and STEAM_1, with every step of the math open in the bit breakdown. Below is the rule to do the same by hand or in a script.

The math between SteamID64 and STEAM_X:Y:Z

A SteamID64 of a regular account is the sum of a fixed base and the Account ID: 76561197960265728 plus N. The base is 0x0110000100000000, which packs universe 1 (Public) in bits 56 to 63, type 1 (Individual) in bits 52 to 55 and instance 1 (desktop) in bits 32 to 51. Subtracting the base returns N, which fits in 32 bits and ranges from 0 to 4294967295. From N, SteamID2 comes out with two simple operations: Y is the remainder of N divided by 2 (the lowest bit) and Z is the integer quotient of N by 2.
The reverse path is just as simple. From STEAM_X:Y:Z, the Account ID is Z x 2 + Y, and the SteamID64 is the base plus that value. In languages with exact 64-bit integers, like JavaScript's BigInt, the math is direct. In a regular floating-point number, the SteamID64 exceeds 2^53 and loses its last digits, which produces an ID that looks right and points to another account. The tool does all arithmetic with BigInt for exactly this reason.
About the X: it is the universe. Older games write STEAM_0 for the Public universe, and newer Source games, such as CS:GO, write STEAM_1. The Account ID and the SteamID64 are the same in both spellings, so a plugin that compares strings may fail if it expects one spelling and receives the other. If your server complains about a valid ID, swap the 0 for a 1 (or the reverse) and try again. The converter shows both lines so you can copy the one the system accepts.

Checked examples

Account with an even Account ID

Input: 76561197960287930
Expected output: STEAM_0:0:11101

N = 22202; Y = 0; Z = 11101.

Odd Account ID

Input: 76561198083722517
Expected output: STEAM_0:1:61728394

N = 123456789; Y = 1; Z = 61728394.

The first possible account

Input: 76561197960265729
Expected output: STEAM_0:1:0

N = 1. Account ID 0 does not belong to a user.

A round number

Input: 76561198000000000
Expected output: STEAM_0:0:19867136

N = 39734272, even.

The largest Account ID

Input: 76561202255233023
Expected output: STEAM_0:1:2147483647

N = 4294967295, that is, all 32 bits set.

The way back

Input: STEAM_1:1:61728394
Expected output: 76561198083722517

61728394 x 2 + 1 = 123456789; plus the base.

Full tool FAQ

How do I convert a SteamID64 to SteamID2?

Subtract 76561197960265728 from the SteamID64 to get the Account ID (N). Then Y is N mod 2 and Z is N divided by 2, rounded down, and the result is STEAM_X:Y:Z. Example: 76561197960287930 minus the base gives N = 22202, so Y = 0, Z = 11101 and the ID is STEAM_0:0:11101.

What is the difference between STEAM_0 and STEAM_1?

What is the Account ID and where does it appear?

How do I find the SteamID64 of a profile with a custom name?

Where does the number 76561197960265728 come from?

What does [U:1:22202] mean?

How do I pull IDs out of CS2 status output or a log?

What is the range of a Steam ID?

How do Steam group IDs work?

Is my data sent anywhere?

Frequently asked questions

Are STEAM_0 and STEAM_1 different accounts?

No. It is the same account written two ways: the first number only marks the universe, and for regular accounts both stand for the Public universe. Always compare the SteamID64 or the Account ID, which do not change.

Why is Y only ever 0 or 1?

Because Y is the lowest bit of the Account ID, that is, the remainder of division by 2. It says whether the Account ID is even or odd, and Z carries all the rest of the number.

Can I convert with just a regular calculator?

You can, if it keeps 17 digits without rounding. Many calculators work with about 15 to 16 significant digits and spoil the result; the converter uses BigInt, which is exact.

Next steps

The math between SteamID64 and STEAM_X:Y:Z

Input	SteamID64	SteamID2	SteamID3	Account ID
STEAM_1:0:11101	76561197960287930	STEAM_1:0:11101	[U:1:22202]	22202
[U:1:123456789]	76561198083722517	STEAM_1:1:61728394	[U:1:123456789]	123456789
76561197960265729	76561197960265729	STEAM_1:1:0	[U:1:1]	1

A SteamID64 of a regular account is the sum of a fixed base and the Account ID: 76561197960265728 plus N. The base is 0x0110000100000000, which packs universe 1 (Public) in bits 56 to 63, type 1 (Individual) in bits 52 to 55 and instance 1 (desktop) in bits 32 to 51. Subtracting the base returns N, which fits in 32 bits and ranges from 0 to 4294967295. From N, SteamID2 comes out with two simple operations: Y is the remainder of N divided by 2 (the lowest bit) and Z is the integer quotient of N by 2.

The reverse path is just as simple. From STEAM_X:Y:Z, the Account ID is Z x 2 + Y, and the SteamID64 is the base plus that value. In languages with exact 64-bit integers, like JavaScript's BigInt, the math is direct. In a regular floating-point number, the SteamID64 exceeds 2^53 and loses its last digits, which produces an ID that looks right and points to another account. The tool does all arithmetic with BigInt for exactly this reason.

About the X: it is the universe. Older games write STEAM_0 for the Public universe, and newer Source games, such as CS:GO, write STEAM_1. The Account ID and the SteamID64 are the same in both spellings, so a plugin that compares strings may fail if it expects one spelling and receives the other. If your server complains about a valid ID, swap the 0 for a 1 (or the reverse) and try again. The converter shows both lines so you can copy the one the system accepts.

Checked examples

Account with an even Account ID

Input: 76561197960287930
Expected output: STEAM_0:0:11101

N = 22202; Y = 0; Z = 11101.

Odd Account ID

Input: 76561198083722517
Expected output: STEAM_0:1:61728394

N = 123456789; Y = 1; Z = 61728394.

The first possible account

Input: 76561197960265729
Expected output: STEAM_0:1:0

N = 1. Account ID 0 does not belong to a user.

A round number

Input: 76561198000000000
Expected output: STEAM_0:0:19867136

N = 39734272, even.

The largest Account ID

Input: 76561202255233023
Expected output: STEAM_0:1:2147483647

N = 4294967295, that is, all 32 bits set.

The way back

Input: STEAM_1:1:61728394
Expected output: 76561198083722517

61728394 x 2 + 1 = 123456789; plus the base.

Full tool FAQ

How do I convert a SteamID64 to SteamID2?

What is the difference between STEAM_0 and STEAM_1?

What is the Account ID and where does it appear?

How do I find the SteamID64 of a profile with a custom name?

Where does the number 76561197960265728 come from?

What does [U:1:22202] mean?

How do I pull IDs out of CS2 status output or a log?

What is the range of a Steam ID?

How do Steam group IDs work?

Is my data sent anywhere?

Frequently asked questions

Are STEAM_0 and STEAM_1 different accounts?

Why is Y only ever 0 or 1?

Because Y is the lowest bit of the Account ID, that is, the remainder of division by 2. It says whether the Account ID is even or odd, and Z carries all the rest of the number.

Can I convert with just a regular calculator?

You can, if it keeps 17 digits without rounding. Many calculators work with about 15 to 16 significant digits and spoil the result; the converter uses BigInt, which is exact.

Steam ID Converter

Continue in the tool

More pages for this tool

Convert SteamID64 to SteamID2 (STEAM_0:Y:Z)

The math between SteamID64 and STEAM_X:Y:Z

Checked examples

Account with an even Account ID

Odd Account ID

The first possible account

A round number

The largest Account ID

The way back

Full tool FAQ

Frequently asked questions

Are STEAM_0 and STEAM_1 different accounts?

Why is Y only ever 0 or 1?

Can I convert with just a regular calculator?

Next steps

Steam ID Converter

Inside the ID

Ready links

Continue in the tool

More pages for this tool

Convert SteamID64 to SteamID2 (STEAM_0:Y:Z)

The math between SteamID64 and STEAM_X:Y:Z

Checked examples

Account with an even Account ID

Odd Account ID

The first possible account

A round number

The largest Account ID

The way back

Full tool FAQ

Frequently asked questions

Are STEAM_0 and STEAM_1 different accounts?

Why is Y only ever 0 or 1?

Can I convert with just a regular calculator?

Next steps

Inside the ID

Ready links